Datasheet > MAX1727

MAX1727

更新时间： 2024-09-17 23:45:51

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
15页	496K
描述
Serially Controlled.Clickless Audio/Video Switches[MAX4562/MAX4563/MAX4562CEE/MAX4562CEE-T/MAX4562EEE/MAX4562EEE-T/MAX4563CEE/MAX4563CEE-T/MAX4563EEE/MAX4563EEE-T ]

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MAX1727 数据手册

19-1489; Rev 0; 12/00

GSM Cellular/PCN Handset RF Power

Management IC

General Description

Features

The MAX1727 is a radio frequency (RF) power-man-

agement IC intended for Global Satellite Mobile (GSM)

communication cellular and personal cellular network

(PCN) handsets using a single lithium-ion (Li+) cell bat-

tery with inputs from +3.1V to +5.5V. The IC contains

four low-noise, low-dropout (LDO) linear regulators to

provide all the supply voltage requirements for the RF

portion of the handset, and two high-speed, wide-band-

width op amps for the power amplifier (PA) power con-

trol loop.

ꢀ +3.1V to +5.5V Input Range

ꢀ One 2.90V, 100mA Low IQ LDO

ꢀ One 2.75V, 50mA Low IQ LDO

ꢀ One 2.75V, 20mA Low IQ LDO

ꢀ Low-Noise LDOs

<90µV

from 10Hz to 100kHz

RMS

>80dB Crosstalk Isolation at 10kHz

>70dB PSRR at 1kHz

Each LDO has its own individual on/off control to maxi-

mize design flexibility. All LDOs are internally trimmed

to a fixed output voltage and are optimized for low

noise and high crosstalk isolation. LDO1 (R1OUT) is

rated for 100µA and is optimized for lowest quiescent

current. It is intended to power the transmitter, receiver,

and synthesizer. LDO2 (R2OUT) is rated for 50mA. It is

intended to power the TCXO, GSM, and PCN high-

power voltage-controlled oscillators (VCOs). LDO3

(R3OUT) is rated for 20mA and is optimized to sup-

press line transients. It is intended to power the UHF

offset VCO. LDO3 has an auxiliary 2.5Ω switched out-

put to allow the VCO to be powered up with precise

timing. LDO4 (R3BYP) is rated for 20mA. It is intended

to power this IC’s reference and LDO3 for superior line

rejection. LDO4 and the reference will be powered on if

any of the R1EN, R2EN, and R3EN enable inputs are

logic high.

ꢀ

5ꢀ Aꢁꢁuraꢁc Oꢂer Line, Load, and ꢃemperature

ꢀ ꢃhree 2.5Ω Switꢁhed Outputs

ꢀ Current and ꢃhermal Limit

ꢀ ꢃwo Undediꢁated Op Amps

Rail-to-Rail CMR Inputs and Outputs

>120dB Channel Separation

>85dB PSRR at 1kHz

ꢀ 10µA (max) Shutdown Current

Ordering Information

PARꢃ

ꢃEMP. RANGE

PIN-PACKAGE

MAX1727EUG

-40°C to +85°C

24 TSSOP

The op amps have wide bandwidth, high DC accuracy,

high slew rate, and Rail-to-Rail^®inputs and outputs.

The op amps can sink and source 3mA, and include

two 2.5Ω switched outputs. The op amps and switched

outputs may be used independently or may be config-

ured to provide optimized power for a PA control loop.

Pin Configuration

R3EN

PCEN

24 GND

23 CBYP

22 ENVCO

21 VCOOUT

20 R3OUT

19 R3BYP

PC1+

Applications

PC1-

PC1OUT

GSM Cellular or PCN Handsets

Single-Cell Li+ Systems

MAX1727

PC2OUT

PC2-

18 R1OUT

3-Cell NiMH, NiCD, or Alkaline Systems

PC2+

16 R2OUT

15 R2EN

PCNAPC 10

Typical Application Circuit and Functional Diagram appear

at end of data sheet.

BANDSWIN 11

GSMAPC 12

14 R1EN

13 GSM/PCN

ꢃSSOP

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

________________________________________________________________ Maxim Integrated Products

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...15

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与MAX1727相关器件

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MAX17270	MAXIM	获取价格	nanoPower Triple-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator
MAX17270	ADI	获取价格	nanoPower、三路输出、单电感多输出(SIMO)升/降压调节器
MAX17270AENE+	MAXIM	获取价格	nanoPower Triple-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator
MAX17270ENE+	MAXIM	获取价格	nanoPower Triple-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator
MAX17270ETE+	MAXIM	获取价格	nanoPower Triple-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator
MAX17271	MAXIM	获取价格	nanoPower Triple-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator
MAX17271	ADI	获取价格	nanoPower、三路输出、单电感多输出(SIMO)升/降压调节器
MAX17271ENE+	MAXIM	获取价格	nanoPower Triple-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator
MAX17271ETE+	MAXIM	获取价格	nanoPower Triple-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator
MAX1727EUG	MAXIM	获取价格	GSM Cellular/PCN Handset RF Power Management IC

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